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  1. #include <bits/stdc++.h>
  2. #define ll long long int
  3. #define pb push_back
  4. #define mp make_pair
  5. #define mod 1000000007
  6. #define pi 3.141592653589793
  7. using namespace std;
  8.  
  9.  
  10. int main() {
  11. //    cout << setprecision(10);
  12.     ios_base::sync_with_stdio(false);
  13.     cin.tie(NULL);
  14.     cout.tie(NULL);
  15.  
  16.     ll n, m;
  17.     cin >> n >> m;
  18.     pair<ll, ll> a[n];
  19.     for (int i = 0; i < n; i++) {
  20.         cin >> a[i].second >> a[i].first;
  21.     }
  22.  
  23.     ll ans = 0;
  24.     sort(a, a + n, greater<pair<ll, ll>>());
  25.     int d = 0;
  26.  
  27.     for (auto e : a) {
  28.         if (d + e.second <= m) {
  29.             d++;
  30.             ans += e.first;
  31.         }
  32.  
  33.     }
  34.  
  35.  
  36.     cout << ans;
  37.  
  38.  
  39.  
  40.  
  41.  
  42.  
  43. }
  44.  
Success #stdin #stdout 0s 4504KB
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https://ideone.com/13qThD
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
secret

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